Ignition apparatus for power-generating systems.



G. 0. DAVISON. IGNITION APPARATUS FOR POWER GENERATING SYSTEMS.

APPLICATION FILED JULY 22, 1912.

' Patented Non-25,1913.

liar/2x251: heqary (O6 1460/7 TED STATES PATENT OFFICE.

GREGORY C. DAVISON, OF NEW LONDON, CONNECTICUT, ASSIGNOR TO ELECTRIC BOAT COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

IGNITION APPARATUS FOR POWER-GENERATING SYSTEMS.

Specification of Letters Patent.

Patented Nov. 25, 1913.

Original application filed November 4, 1910, Serial No. 590,627. Divided and this application filed July 22, 1912. Serial No. 710,786.

To all whom it may concern:

Be it known that I, GREGORY C. DAVISON, a citizen of the United States, residing at New London, county of New London, State of Connecticut, have invented certain new and useful Improvements in Ignition Apparatus for Power-Generating Systems; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to an igni- 5 tion attachment to be associated with any" chamber or the like into which it is desired I to project an ignition blast of flame.

iii-connection with the ignition of the com- 21, 1912, granted on application Ser. No.

590,627, filed November 4, 1910, and of which this application is a division.

stitutes a self-contained unit capable of bewith the generating chamber, and provided with mechanism for igniting the fuse, which mechanism is preferably actuated by means of a fluid. To this end, it comprises essentially a casing containing a chamber adapted to receive a combustible fuse, from which chamber an outlet duct leads through the casing for the purpose of directing the prod nets of combustion of the fuse into the chamber to which the ignition device is attached. The fuse-receiving chamber has an open mouth in which a fuse-carrying plug is seated, and the casing supports a trigger arranged to co-act with a firing pin carried by the plug; said trigger being actuated by suitable means, preferably a diaphragm within a diaphragm chamber forming part of the casing and having pressure connections.

In the drawingFigure 1 is a vertical section of the improved ignition attachment constructed in accordance with the invention; Fig. 2 is a sectional plan on the line 33 of Fig. l; and Fig. 3 is a sectional plan on the line 4-4 of Fig. 1.

This ignition mechanism comprises a casing Z, having a lateral extension Z screwed to the wall of the generating chamber f, the extension containing an open duct through which communication is established between the interior of the casing Z and the combusti- V confined between the trigger disk 1), and The device is particularly adapted for use I the screw cap w", which screws onto the upper end of the plug a.

The trigger disk 4; has a projection 0 extending into a slot in the side of plug a, and engaging the trigger 2 pivoted at a in the wall of the laterallyextending chamber Z which extends from the fuse receptacle Z.

i j This chamber contains a flexible diaphragm The particular object of the invention 1s: to provide such an attachment which cona, seated on a shoulder in the casing Z and carrying a plunger 5, to which the end of the trigger a is connected, the spring 0 being provided to force the diaphragm outwardly. The diaphragm is held in position by the screw cap d, which has a pressureadmission orifice 6 connected by the pressure pipe f to a part of the pressure system which supplies the fuel.

The parts are prepared for the firing in the following manner: The fuse m, being provided'with'a blank cartridge m at its upper end, is screwed into the plug a. The plug is then inserted in the casing Z, and turned until the trigger a is projected into the slot, whereupon the follower nut 79 is screwed down. This forces the plug against its seat and at the same time cooks the firing pin, the firing spring r, being then inserted and the cap w screwed into place. The parts are then ready for firing by the pressure of the fuel acting against the diaphragm a.

A firing attachment constructed in accordance with my invention has the great advantage that it projects a violent stream of the products of combustion of the fuse into the generating chamber, and the fuse itself is not exposed to the rush of air or other fluid which may be passing through the chamber, and which would have a tendency to extinguish a fuse exposed to it. Furthermore, the device lends itself readily to adjustment, for the purpose of regulating the precise instant at which the igniter is fired with a given pressure of trigger actuating fluid, because the diaphragm spring may easily be removed and replaced by one of different strength.

What I claim is:

1. A firing attachment for the purpose described, comprising a casing, having a fuse-receiving chamber with an outlet duct for the product of combustion of the fuse, the portion of the casing surrounding said duct being adapted for attachment to a chamber into which it is desired to project an ignition flame, a fuse-carrying plug projecting into said chamber, and means for igniting the fuse.

2. A firing attachment for the purpose described, comprising a casing having an openmouthed fuse-receiving chamber With a lateral outlet duct for the products of combustion of the fuse, the portion of the casing surrounding said duct being adapted for attachment to a chamber into Which it is desired to project an ignition flame, a fusecarrying plug seated in the mouth of said chamber, and. means for igniting the fuse.

3. A firing attachment for the purpose described, comprising a casing containing a fuse-receiving chamber with a lateral outlet duct for the products of combustion of the fuse, the portion of the casing surrounding said duct being adapted for connection to a chamber into which it is desired to project an ignition flame, a slotted plug projecting into said chamber and carrying a fuse and firing pin, a pivoted trigger on said casing extending through the slot in the plug into the path of the firing pin, a diaphragmchamber on the casing, a diaphragm and diaphragm spring therein, the diaphragm being connected to the trigger, and pressure connections to the diaphragm chamber.

4h A firing attachment for the purpose described, comprising a casing containing a fuse-receiving chamber with a lateral outlet duct for the products of combustion of the fuse, the portion of the casing surrounding said duct being adapted for connection to a chamber into which it is desired to project an ignition flame, a slotted plug projecting into said chamber and carrying a fuse and firing pin, a pivoted trigger on said casing extending through the slot in the plug into the path of the firing pin, a diaphragmchamber on the casing, a diaphragm and diaphragm spring therein, the diaphragm being connected to the trigger, and pressure connections to the diaphragm chamber, the said diaphragm chamber having a removable cap.

5. Firing pin releasing mechanism for the purpose described, comprising a pivoted trigger, a diaphragm casing containing a diaphragm and plunger connected to said trigger, a spring surrounding said alunger and pressing the diaphragm outwar ly, and a removable cap closing the end of said casing.

In testimony whereof I aflix my signature, in presence of two witnesses. v

GREGORY U. DAVISON.

Witnesses:

F. L. BRAKE, C. H. BEDELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

